In vitro Effects of lonophores and Inhibitors of Main Sodium and Calcium Movements on Tyrosine and Tryptophan Transport by Human Erythrocytes

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Abstract
Peripheral models using blood cells might be biochemical markers in various psychiatric illnesses. In previous papers we reported a deficit of tyrosine and tryptophan transport in red cells incubated in plasma from depressed patients. In the present study we investigated the role played by sodium and calcium in these transports by using inhibitors and ionophores of the main movements of these electrolytes. We also studied the contribution of phloretin-sensitive countertransport, which has been described as low in psychiatric conditions.

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